Eterna Forest is a forest surrounded by Route 205. Inside it, on your first entry, you will encounter the trainer Cheryl who would like your assistance in exiting the forest, creating double-battles in the wild and with trainers. At the end of the Forest, you will find the Old Chateau, an abandoned mansion.

Moss RockAt the southern part of the forest is a massive moss covered rock. If you raise an Eevee near this rock, it will evolve into a Leafeon.